This is mainly due to the fact that the things that can go wrong are not limited by a requirement to be rational. Just ask Wall Street. And don’t forget that the person asking this question usually doesn’t want to know the real answer, they’re just ready to move on.

Be very careful around fragile equipment, electricity, icy roads and, perhaps most importantly, the delete key. Especially while pulling an all-nighter. You also want to aggressively seek ways to eliminate as much of the accidental from your process as possible.

Whether it a conference room, ballroom, or theater — see the space you will be working in for yourself. The diagram provided by the venue will not reveal everything you need to know — no matter how detailed and accurate it is.

Having something and having something adequate to the task at hand are two very different things. Just don’t ask if the venue has what you need — get details. Always go and check it out in person if possible. (Added November 2008)

A successful rehearsal has to be about more than just a speaker getting the words, voice, pacing, stage movement and gestures right. It also has to include, in a meaningful way, the easy to overlook “backstage” elements that need to be performed correctly and in unison with the presenter. (Added January 2009)